This collection of data was produced by the United States National Energy Information Center. Data layers in this collection cover a variety of themes, including: crude oil, natural gas, petroleum, coal, and power plants. These data were downloaded from the EIA website (http://www.eia.gov/maps/layer_info-m.cfm) on September 17, 2015. System requirements: Geographic Information Systems (GIS) software that reads ESRI shapefile format.